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HelpTest Code TCGRV T-Cell Receptor Gene Rearrangement, PCR, Varies
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
VariesShipping Instructions
Body fluid or spinal fluid specimens must arrive within 4 days of collection.
Specimen Required
Submit only 1 of the following specimens:
Specimen Type: Body fluid
Container/Tube: Sterile container
Specimen Volume: At least 5 mL
Collection Instructions:
1. If the volume is large, pellet cells prior to sending.
2. Send less volume at ambient temperature or as a frozen cell pellet.
Specimen Stability Information:
Body fluid: Ambient 4 days/Refrigerated/Frozen
Cell pellet: Frozen
Specimen Type: Paraffin-embedded bone marrow aspirate clot
Container/Tube: Paraffin block
Specimen Stability Information: Ambient
Specimen Type: Frozen tissue
Container/Tube: Plastic container
Specimen Volume: 100 mg
Collection Instructions: Freeze tissue within 1 hour of collection.
Specimen Stability Information: Frozen
Specimen Type: Paraffin-embedded tissue
Container/Tube: Paraffin block
Specimen Stability Information: Ambient
Specimen Type: Tissue slides
Container/Tube: Unstained tissue slides
Specimen Volume: 10 slides
Specimen Stability: Ambient
Specimen Type: Spinal fluid
Container/Tube: Sterile vial
Specimen Volume: 5 to 10 mL
Specimen Stability Information: Ambient 4 days/Refrigerated
Specimen Type: Extracted DNA
Container/Tube: 1.5- to 2-mL tube with indication of volume and concentration of DNA
Specimen Volume: Entire specimen
Collection Instructions:
1. Label specimen as extracted DNA and source of specimen
2. Indicate volume and concentration of DNA on label
Specimen Stability Information: Refrigerated/Ambient
Specimen Minimum Volume
Body fluid or Spinal fluid: 1 mL
Tissue: 50 mg
Extracted DNA: 50 microliters at 20 ng/mcL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Varies | Varies | ||
Reference Values
An interpretive report will be provided.
Positive, negative, or indeterminate for a clonal T-cell population
Day(s) Performed
Monday through Friday
CPT Code Information
81340-TCB (T cell antigen receptor, beta) (eg, leukemia and lymphoma), gene rearrangement analysis to detect abnormal clonal population(s), using amplification methodology (eg, PCR)
81342-TCG (T cell receptor, gamma) (eg, leukemia and lymphoma), gene rearrangement analysis, evaluation to detect abnormal clonal population(s)
Report Available
7 to 14 daysSpecimen Retention Time
Extracted DNA: 3 monthsReject Due To
| Bone marrow core biopsies Paraffin shavings |
Reject |